Horesea is a good Pokemon againts fire, ghost, and ground types because it is supper effective againts these types. Also it doesnt take much damage from grass types. when you evolve it into Seadra, it gets a really good defence stat. The only problem i have with it is it's low special defence.
Use a good rod where you can find horsea use your pokedex if you seen one already.
Route 226 with the Good Rod.
HOW GET A HORSEA ON POKEMONINDIGO.COM
You can't get horsea in xd.
Horsea is a Kanto region pokemon.
You can capture horsea at the safari zone look for the water on the western portion of the safari zone use the good or super rod to hook up horsea.
you get horsea on route 226
Route 226 with good rod
you have to go to pacifidlog town and surf then you'll run into a horsea and that's how you get a horsea.
Horsea transforms into Seadra at Level 32.
You can get a Horsea in Pokemon Silver by finding it at the Whirl Islands.
magickarp horsea tetecool starmie shelder the rest i forgot :P